High severity · published Sep 15, 2026
CVE-2026-11729
IBM MQ Java messaging is vulnerable to remote code execution
8.5
CVSS
0.5%
EPSS
No
On KEV
Description
IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to execute arbitrary code in client applications due to unsafe deserialization that enables JNDI injection attacks.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MQ
MQ · IBM
9.1.0.0 through 9.1.0.37 LTS; 9.2.0.0 through 9.2.0.43 LTS; 9.3.0.0 through 9.3.0.41 LTS; 9.3.0.0 through 9.3.5.1 CD; 9.4.0.0 through 9.4.0.25 LTS; 9.4.0.0 through 9.4.5.1 CD; +1 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11729
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-11729
www.ibm.com
https://www.ibm.com/support/pages/node/7284941
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